The Layer brush was in Blender before 2.81, when the sculpt API was
introduced. It had a huge amount of bugs and glitches which made it
almost unusable for anything but the most trivial cases. Also, it needed
some hacks in the code just to support the persistent base.
The brush was completely rewritten using the Sculpt API. It fulfills the
same use case as the old one, but it has:
- All previous artifacts fixed
- Simpler code
- Persistent base now works with multires thanks to the sculpt API
- Small cursor widget to preview the layer height
- More controllable and smoother strength and deformation
- More correct masking support
- More predictable invert support. When using persistent base, the brush invert mode resets to layer height 0, instead of jumping from +1 to -1. The brush can still be inverted in the brush direction property.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D7147
This implements the Surface Smooth Brush as a mode inside the Smooth tool,
which uses the HC algorithm from "Improved Laplacian Smoothing of Noisy Surface Meshes".
Comparted to the regular smooth brush with laplacian smooth, this brush removes
the surface while preserving the volume of the object.
The smooth result can be controlled by tweaing the original shape preservation,
displacement and iteration count.
The same surface smooth operation is also available as a mesh filter.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D7057
Hardness is now a property implemented for all brushes, so this is no
longer needed.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D7078
This commit is a full refactor of the grease pencil modules including Draw Engine, Modifiers, VFX, depsgraph update, improvements in operators and conversion of Sculpt and Weight paint tools to real brushes.
Also, a huge code cleanup has been done at all levels.
Thanks to @fclem for his work and yo @pepeland and @mendio for the testing and help in the development.
Differential Revision: https://developer.blender.org/D6293
While it might be handy to have type-less functionality which is
similar to how C++ math is implemented it can not be easily achieved
with just preprocessor in a way which does not have side-effects on
wrong usage.
There macros where often used on a non-trivial expression, and there
was at least one usage where it was causing an actual side effect/bug
on Windows (see change around square_f(sh[index++]) in studiolight.c).
For such cases it is handy to have a function which is guaranteed to
have zero side-effects. The motivation behind actually removing the
macros is that there is already a way to do similar calculation. Also,
not having such macros is a way to guarantee that its usage is not
changed in a way which have side-effects and that it's not used as an
inspiration for cases where it should not be used.
Differential Revision: https://developer.blender.org/D7051
Face Sets are the new system to control the visibility state of the mesh in sculpt and paint modes. They are designed to work in modes where brushes are the primary way of interaction and they provide much more control when working with meshes with complex shapes and overlapping surfaces.
This initial commit includes:
- Sculpt Face Sets data structures and PBVH rendering.
- Face Set overlay and opacity controls.
- Sculpt Undo support.
- Remesher reprojection support. The visibility state of the mesh is also preserved when remeshing.
- Automasking and Mesh filter support.
- Mask expand operator mode to expand Face Sets (Shift + W) and flood fill areas by connectivity (press Ctrl while expanding).
- Sculpt Mode Face Sets and Visibility API.
- Sculpt Face Sets creation and visibility management operators.
- Operator to randomize the Face Sets colors.
- Draw Face Sets brush tool to create and edit the Face Sets. Drawing on the mesh creates a new Face Set. Pressing Ctrl before drawing modifies the Face Set under the brush at the beginning of the stroke.
- Updated keymap and menu to work with Face Sets from Sculpt Mode (H to toggle visibility, Alt + H to show all, Shit + H to hide).
- Pie menu on the W key with Face common Sets operations.
Know limitations:
- Multires support. The Face Sets and Visibility API needs to be implemented for Multires.
Reviewed By: jbakker, #user_interface, Severin
Differential Revision: https://developer.blender.org/D6070
Instead of using anonymous booleans flags, also allows to keep the same
behavior in all cases, without needing special handling from calling
code for our beloved oddballs object proxies...
Clay Thumb was using a custom hardness implementation and value to make
it functional. Hardness is now a property of brushes and it is
implemented for all brushes, so this is no longer needed.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D6981
This brush has a simple physics solver that helps when sculpting cloth.
- The mass and the damping properties of the simulation are properties of the brush.
- It has two additional radius control to limit the influence and falloff of the simulation.
- Masked vertices are pinned in the simulation, and it applies the sculpt gravity directly in the solver.
- The Cloth Brush has 7 deformation modes with 2 falloff types (radial and plane).
The brush can create the constraints only on the required PBVH nodes, so the simulation is isolated on high poly meshes. As long
as the brush size is not too big it should be possible to keep it real time.
Known issues:
- The way constraints are created is extremely basic and it creates repeated constraints. Maybe there is another way to create fewer constraints while keeping the simulation quality decent. This part can also be multithreaded. (As it is it works ok, but it could be better)
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6715
Some users reported that the previous red color of the cursor was too
saturated and that can be distracting.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D6828
This enables an extra layer of control in the sculpt brushes.
For now it is enabled only in Scrape, but it should work in all brushes (like normal radius). In the future it may also be enabled in other brushes.
You can tweak in this property in the scrape brush to achieve a much better behavior when working on curve surfaces and control how much volume you want to trim. In most cases, it also fixes the bug where the brush keeps trimming in the same area without disabling accumulate.
It should be possible to fix some other artifacts in other brushes by tweaking this default property.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D5993
This patch allow to change the brush tip shape between a square and a
circle using a brush property.
After this change we are no longer testing the distance against a cube
(the Z axis is not used). I did not test this in depth, but if it does
not produce any artifacts I think we can keep it this way instead of
adding more complexity to the code.
In this new distance test the brush falloff is only applied on the
rounded parts of the square to avoid sharp artifacts in the
diagonals. Because of this, the round version is much softer than
the square one. The planned hardness property will fix this, but
this can also be avoided by setting the fallof to a custom curve.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6165
The IK chain was using an anchor point by default as it makes sense for
posing, but for creating curved shapes it is useful to be able to
disable it.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6584
This brush simulates deforming clay with your fingers, accumulating
material during the stroke. It has a plane that tilts during the stroke
in the front part of the brush to achieve this effect.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6238
The full name was "Topology Slide/Relax", but it didn't fit in the
toolbar UI. This was causing some problems:
- The mesh filter that does the same thing is called "Relax"
- We may want to add a "Topology Brush" tool in the future that is more
oriented to retopology task (like creating strips of quads), so by doing
this we avoid having two tools with the same name in the UI.
Reviewed By: billreynish
Differential Revision: https://developer.blender.org/D6590
This commits introduces the pose_ik_segments brush property in the Pose Brush. When increasing the IK segments count, the brush generates more segments and weights associations following the topology of the mesh. When moving the brush, these segments are transformed using an IK solver and they are used to deform the mesh.
When pressing Ctrl, the brush controls the segments' roll rotation instead of using the IK solver. The brush falloff controls how much rotation is propagated from the first to the last segment in the chain.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6389
Previously the alpha was hardcoded to 0.7. Now it is possible to control
the cursor alpha by changing the alpha color of the cursor color
property. New alpha default is 0.9. This, with the new saturated colors,
should make the cursor more visible on highdpi screens.
I also removed the cache location preview as it is too visible right now
with the new alpha and color values.
Reviewed By: billreynish
Differential Revision: https://developer.blender.org/D6433
The previous cursor colors were chosen to match the toolbar icon color,
but the contrast on top of the default matcaps was not enough. This
commit uses more saturated colors, which are more visible on top of the
default matcaps.
Reviewed By: jbakker, billreynish
Differential Revision: https://developer.blender.org/D6194
The relation between the pressure/size and the pressure/alpha is a
fundamental property that defines the behavior of a brush, so it does
not make sense to have it unified across all brushes. This applies both
for sculpting and painting.
Some of the new 2.82 brushes need pressure/size or pressure/alpha to be
enabled to work propely, while others don't. Users should not be
switching on and off this property manually when changing brushes if they
want to use unified size. This is also causing that some users are using
the brushes with an incorrect configuration.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6291
Extend options are currently stored per curve. This was not clearly
communicated to the user and they expected this to be a setting per
CurveMapping.
This change will move the option from `Curve` to `CurveMapping`. In
order to support this the API had to be changed.
BPY: CurveMap.evaluate is also moved to CurveMapping.evaluate what
breaks Python API. Cycles has been updated but other add-ons have
not. After release of 2.81 we can merge this to master and adapt
the add-ons.
Reviewed By: campbellbarton
Differential Revision: https://developer.blender.org/D6169
This implements a 5th-order equation smoothstep, which produces a flat
surface at the brush center. Some users find that our current grab brush
is too sharp, so now we have both options.
This also improves the behavior of the new clay brushes.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6265
After adding normal radius, the main use of the Scrape brush is to create flat surfaces with sharp edges. In that case, it does not make sense to have our current "Peaks" version of the brush as its inverted version.
The correct inverted version of Scrape for this use case is the Fill brush. This way you can use this tool to crease both concave and convex sharp edges and to fix the artifacts one version produces with its inverted version.
I think we should merge these two tools into one, but for now, this solution keeps compatibility with the old behavior.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6022
This commit implements the Topology Slide/Relax brush and the Relax mesh filter.
These tools are designed to move the topology on top of the mesh without affecting the volume.
The Topology Slide/Relax brush slides the topology of the mesh in the direction of the stroke. When pressing shift, it has an alternative smooth mode similar to the Relax Brush in the sculpt branch. It should be way more stable and produce fewer artifacts.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6059
The smooth iterations of the pose factor were hardcoded to 4. This works fine in most situations when you are posing a low poly mesh, which is the main use case of this tool. I added the smooth iterations as a brush property in case you need to pose a high poly mesh directly without producing artifacts.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6157
The Multiplane Scrape brush creates sharp edges with a given fixed angle by trimming the mesh with two planes in local space at the same time. When working with stylized or hard surface models, this brush produces way better results and is more predictable than any other crease/flatten brush based on curves and alphas.
It is also the first brush we have than can produce hard surface concave creases.
The Multiplane Scrape Brush also has a dynamic mode where it samples the surface to fit the angle and scrape planes during a stroke. With this mode enabled you can sculpt multiple times over the same edge without creating artifacts.
It can also create creases that change between concave and convex during the same stroke.
The behavior of this brush will improve after merging patches like D5993 and its behavior in concave creases can still be improved, so I will keep tweaking its parameters and default values once we have all brush properties available.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6174
The previous Clay brush was similar to flatten. Now it has a different plane calculation and falloff, based on the position of the vertices before deforming them, so it feels more like adding clay to the model.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6228
By squaring the pen pressure and disabling BRUSH_SPACE_ATTEN the brush
feels like it has a bigger strength range, wich makes it easier to
control when applying less pressure in order to smooth sculpted
surfaces.
Each brush should have a custom input pressure curve by default to get
an optimal behaviour and make all brushes consistent, but that is going
to take some time to get it right.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6214
This only frees brush_rng and random_tex_array when they were actually
previously allocated.
In a unit test (see D6246) I want to be able to partially start Blender
so that I can load a blend file. To prevent memory leaks, I also want to
be able to release memory, which currently requires calling
`BKE_blender_free()`. This unconditionally calls `RE_texture_rng_exit()`
and `BKE_brush_system_exit()`, which now crash on freeing `NULL`. This
patch fixes that.
Allocation (`BKE_brush_system_init()`) and freeing
(`BKE_brush_system_exit()`) are done asymmetrically. The allocation
functions are called from `main()` in the creator module, but the
freeing is done by `BKE_blender_free()` the Window Manager. Ideally we
symmetrise this and initialise Blender from outside the window manager
(so that the initialisation can be done without WM and Python too), but
for now I'm happy when things don't crash.
Reviewed by: sergey via pair programming
The previous default was 1.7, so the brush was more stable on surface
normal changes, but softer. I don't think users expect this brush to be
that stable, so by using 1.55 we make the brush a little bit stronger on
curved surfaces by default.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D6187
You may want to disable antialiasing if you are working with pixel art
or low resolution textures. It is enabled by default.
Reviewed By: jbakker, campbellbarton
Differential Revision: https://developer.blender.org/D6044
This commit also fixes the same issue in elastic deform
Reviewed By: jbakker
Maniphest Tasks: T70554
Differential Revision: https://developer.blender.org/D6014
- Fix accumulate by allowing normal radius greater than one. Now it works as it should and it should be enabled by default
- Make the square test sharper. This gives a lot more definition to the brush, even when working with fewer polygons
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D5984
This applies to all paint modes except sculpt and grease pencil brushes.
When painting color or weight it's best to paint the color
the user has selected, without them having to make multiple strokes.
This commit introduces the following changes:
- Invert the direction of the brush strength WM control. It was working in the opposite direction to any other control in Blender. Now dragging to the right increases the strength.
- Increase the alpha of the cursor
- Remove the font shadow of the numbers in the WM control. It was adding too much visual noise when rendered on top of the brush alpha
- Add a second circle to preview the strength in the cursor
- Increase the resolution of the cursor circles. Now they look smooth even when working with large brush sizes.
- Add a line preview to display the brush curve
- Don't offset the cursor preview when changing size and strength
Reviewed By: billreynish, brecht
Differential Revision: https://developer.blender.org/D5889
We should not be updating the cache true location there.
This commit also fixes the snake hook default alpha.
Reviewed By: brecht
Maniphest Tasks: T56497
Differential Revision: https://developer.blender.org/D5915
